First debuted in Compute!'s Gazette Issue 31, Here's a truly amazing machine language assembler for the 64 and 128 (in 64 mode). "Fast Assembler" supports multiple statement lines, labels, and macro-like "include" files. It can assemble to memory or to disk. Written very compactly, it occupies only about 2600 bytes, leaving the rest of memory for your source code. It also adds to the BASIC editor several new features useful to both BASIC and machine language programmers.

Thanks go to BlueCursor for this contribution.